Oracle Backup and Recovery is a process of backing up and recovering data from an Oracle database. A backup is a copy of all or part of an Oracle database that you can use to restore the database if it is damaged. A recovery is the process of restoring an Oracle database from a backup.
Backing up an Oracle database is important because it protects your data from accidental deletion, corruption, or other types of damage. Recovery is important because it enables you to restore your database to a previous state if it is damaged.
Oracle provides several tools for backing up and recovering your database. The most common tool is the Oracle Backup and Recovery Tool (rman). The rman tool can backup and restore an entire Oracle database, or you can use it to backup and restore specific datafiles, tablespaces, or other object within the database.
The best way to protect your Oracle database is to back it up regularly and to test your backups to make sure they are usable.
Contents
- 1 Which Oracle backup and recovery file is given?
- 2 What is RMAN backup and recovery?
- 3 How do I backup and restore an Oracle database?
- 4 What is difference between restore and recovery in Oracle?
- 5 What are the types of backup?
- 6 What are the types of recovery?
- 7 How do I backup my entire Oracle database?
Which Oracle backup and recovery file is given?
Oracle provides a number of different backup and recovery files to help you protect your data. It can be confusing to know which file to use for your specific backup and recovery needs. This article will help to clear up some of the confusion and explain which Oracle backup and recovery file is best for you.
The first thing you need to understand is that there are two types of Oracle backup files: image files and archived redo logs. Image files are used to create a backup of an entire database, while archived redo logs are used to create a backup of the transaction logs.
The next thing you need to understand is that there are two types of image files: full and incremental. A full image file backup will back up all of the data in your database, while an incremental image file backup will only back up the data that has changed since the last backup.
The final thing you need to understand is that there are two types of archived redo logs: continuous and cumulative. A continuous archived redo log backup will back up all of the redo logs since the last backup, while a cumulative archived redo log backup will only back up the most recent redo logs.
So, which Oracle backup and recovery file should you use? It really depends on your specific needs. If you need to create a full backup of your database, then you should use a full image file backup. If you need to create an incremental backup of your database, then you should use an incremental image file backup. If you need to back up all of the redo logs since the last backup, then you should use a continuous archived redo log backup. If you need to back up the most recent redo logs, then you should use a cumulative archived redo log backup.
What is RMAN backup and recovery?
Oracle’s Recovery Manager (RMAN) is a powerful backup and recovery tool that can be used to protect your Oracle database from data loss. RMAN can be used to create backup sets and image copies of your database, and to perform point-in-time recoveries.
RMAN backups are created in two formats: backup sets and image copies. Backup sets are the most common type of RMAN backup, and they consist of a collection of datafiles and archived redo logs. Image copies are created by copying an entire database, including all datafiles and archived redo logs, to a separate location.
RMAN can be used to perform point-in-time recoveries, which allow you to restore your database to a specific point in time. This can be useful for recovering from data corruption or other data loss incidents.
RMAN is a powerful tool, and it is important to understand how to use it correctly for your specific database configuration. For more information on using RMAN for backup and recovery, please see the Oracle documentation.
How do I backup and restore an Oracle database?
An Oracle database stores data and metadata in tablespaces, which are logically grouped together in a database. A tablespace can contain one or more datafiles, and each datafile can contain one or more tablespaces. A tablespace can also contain other tablespaces, which are called subspaces.
A backup of an Oracle database creates a copy of the datafiles and metadata that make up the database. The backup can be used to restore the database if it is damaged or lost.
There are two types of backups: hot and cold. A hot backup is taken while the database is up and running. A cold backup is taken when the database is shut down.
There are two ways to back up an Oracle database: using the Oracle Enterprise Manager Grid Control or the Oracle command-line interface.
To back up an Oracle database using the Oracle Enterprise Manager Grid Control:
1. Open the Oracle Enterprise Manager Grid Control console.
2. Expand the Oracle Management Server tree in the console tree.
3. Right-click the target database and select Backup.
4. The Backup Database dialog box is displayed.
5. Select the type of backup you want to perform: Full, Incremental, or Differential.
6. Select the backup destination.
7. Click Backup.
To back up an Oracle database using the Oracle command-line interface:
1. Open a terminal window.
2. Enter the following command to start the Backup utility:
$ ./bkup
3. The Backup utility is displayed.
4. Enter the following command to back up the database:
./bkup db
5. The Backup utility is displayed.
6. The database is backed up to the default backup destination.
What is difference between restore and recovery in Oracle?
There is a big difference between restore and recovery in Oracle. A restore operation copies files from a backup to the original location, while a recovery operation restores a database to a specific point in time.
A restore operation is usually used to restore a database to its original state after it has been damaged. A recovery operation, on the other hand, is used to restore a database to a specific point in time. This can be useful, for example, if you need to recover data that was lost or damaged due to a mistake.
There are two types of recovery operations: point-in-time recovery (PITR) and rolling forward recovery. PITR restores a database to a specific point in time, while rolling forward recovery restores the most recent version of the database.
If you need to perform a recovery operation, you will first need to create a recovery catalog. This is a special database that stores information about the backups and recovery operations that have been performed. The recovery catalog can be created using the CREATE CATALOG command.
Once the recovery catalog is created, you can use the RECOVER command to perform a recovery operation. The RECOVER command can be used to restore a database to a specific point in time, or to restore the most recent version of the database.
The RECOVER command can be used in two different modes: manual mode and automatic mode. Automatic mode is the default mode, and it will automatically select the most appropriate recovery operation to perform. Manual mode, on the other hand, allows you to select the specific recovery operation that you want to perform.
The RECOVER command can also be used to restore a tablespace, a datafile, or a controlfile.
The RESTORE command can be used to restore a database, a tablespace, a datafile, or a controlfile. The RESTORE command can be used in two different modes: manual mode and automatic mode. Automatic mode is the default mode, and it will automatically select the most appropriate restore operation to perform. Manual mode, on the other hand, allows you to select the specific restore operation that you want to perform.
The RESTORE command can also be used to restore a backup to a different location.
What are the types of backup?
There are three general types of backups: full, incremental, and differential.
A full backup is a complete copy of all the files on your computer. This is the most time-consuming type of backup, but it’s also the most comprehensive.
An incremental backup copies only the files that have changed since the last backup. This is a much faster process than a full backup, but it’s less comprehensive.
A differential backup copies all the files that have changed since the last full backup. This is slower than an incremental backup, but it’s more comprehensive.
What are the types of recovery?
There are many different types of recovery. Everyone’s recovery is unique and different, so there is no single “right” way to recover. However, there are several common types of recovery that people may use.
One type of recovery is self-care. This involves taking care of yourself both physically and emotionally. This may include things like eating healthy foods, getting regular exercise, getting enough sleep, and taking time for yourself to relax and de-stress.
Another type of recovery is therapy. This involves working with a therapist to address the underlying causes of your addiction. Therapy can help you understand why you became addicted and how to manage your addiction in the future.
Another type of recovery is support groups. These groups provide a supportive environment where you can share your experiences and struggles with others who are also recovering from addiction. Support groups can be helpful in providing accountability and support.
There are many other types of recovery, including faith-based recovery, holistic recovery, and recovery support services. The best type of recovery for you depends on your individual needs and preferences. Talk to your doctor or therapist to find the type of recovery that is best for you.
How do I backup my entire Oracle database?
There are a few different ways to back up an Oracle database, but the most common is to use the Export utility. The Export utility can be used to create a backup of an entire database, or selected tables and data.
To create a backup of an entire Oracle database, use the following command:
export complete=y
This will create a backup file in the current directory that includes the entire database.
If you only want to back up selected tables and data, you can use the following command:
export table=table_name
This will create a backup file in the current directory that includes the table_name table and all of its data.
